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Established 2004

Ruddlesden geotechnical

Ruddlesden geotechnical provides ground investigation, geotechnical consultancy and contamination assessment services.

Based in Exeter, but covering the whole of the UK, albeit primarily concentrated in the South West, Ruddlesden geotechnical was formed in 2004.

Ruddlesden geotechnical works on behalf of a wide client base, including local, regional and national housing developers, housing associations, commercial developers, building contractors, structural and civil engineers, architects, building consultants, quantity surveyors, local authorities and private individuals.

Development projects range from single dwellings and extensions to large housing estates, multi-storey flats, offices, industrial units, roads, slopes, schools, hospitals and basements.

The services and projects listed on this web-site provide an indication of those undertaken by Ruddlesden geotechnical, but others are carried out. If your requirement is not readily identifiable on this web-site, please contact us as we may still be able to help you.

  • AGS
  • Constructionline
  • CSCS
  • SMAS
  • ECFC trust

Latest news

Recent projects

  • Latest news

    16 Apr 2026

    Coastal Slope Stability Assessment

    Geoff Davis has recently been in his element, carrying a slope stability assessment for a holiday park that has recently seen some quite dramatic ground movements.One thing that this project has highlighted is that for all the new technologies that are available to help us understand the ground, including LiDAR, drone surveys, remote sensing and inclinometers, all of which we intend to use on this site, they are of little use if the ground model is not understood. And this understanding of geology and geomorphology only come from a combination of education and experience.It is hoped that our understanding of the landslide processes at this complex site will allow us to predict possible future behaviour and assist in developing a long-term strategy for the future of the holiday park and its management.

    Coastal Slope Stability Assessment
    Coastal Slope Stability Assessment

  • Recent projects

    Slope Stability Assessment at Holiday Park, Dorset

    It was proposed to locate several holiday lodges on the bank of a lake at a holiday park in Dorset. Ruddlesden’s Phase 1 geotechnical assessment indicated that the bank was likely remnant from historical quarrying works and that it was likely to comprise re-worked natural soils (made ground). As part of a geotechnical investigation of the site, slope stability modelling was undertaken to ascertain the effect the proposed lodges would have on the bank’s stability. The stability modelling indicated that the placement of the lodges would likely lead to instability of the bank in the long term. It was recommended that the lodges be relocated, their foundations be sited below the posturized slip-surface, the existing bank material be excavated and replaced with engineered fill, or the bank be retained, to mitigate the risk of landslip.

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  • Recent projects

    Asbestos Testing Allays the Concerns of Locals

    As part of a larger contamination investigation and assessment for the residential development of a former power station, asbestos testing was undertaken. Anecdotally, asbestos containing materials (ACMs) arising from the decommissioning of the former power station had been encapsulated in a buried concrete chamber. Concerns were raised by locals and the local authority about how safe this was and whether the proposed development would endanger the general public, end users and construction workers. Intensive asbestos investigation and assessment, undertaken in accordance with the Control of Asbestos Regulations (CAR, 2012) and which included asbestos quantification testing, identified that the proposed remedial strategy to mitigate other contaminants at the site, which included raising the site levels and capping with inert soil, would also protect from the low levels of asbestos recorded in the soil., with no further measures required protect end users. The asbestos testing also enabled safe methods of working to be determined for construction workers.

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